How long does it take to fly to Islip, New York?

The flight from Colorado to Islip, New York depends on which airports you’re departing and arriving from and whether or not you have a layover. If you fly from Denver (a popular airport in Colorado) to New York John F Kennedy Intl Airport (the most popular airport in Islip, New York), then the flight time is 3h 35m on average. If you fly from Colorado Springs (another popular airport in Colorado) to New York John F Kennedy Intl Airport, then the average flight time is 6h 27m.

What is the cheapest airline that flies from Colorado to Islip Long Island?

Frontier, Southwest, and JetBlue are the most popular carriers operating from Colorado to Islip Long Island

What airlines fly to Islip, New York?

United Airlines, Delta and Frontier are the top three most popular airlines that fly to Islip, New York from Colorado according to our data. United Airlines is the first choice among our users, with 49% of people opting to fly with this airline when traveling to Islip, New York. Keep in mind that there are 7 different airlines that fly to Islip, New York on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from Colorado to Islip Long Island Airport?

Prices for flights from Colorado to Islip Long Island Airport are updated daily.

How many operators does momondo search for flights from Colorado to Islip Long Island Airport?

There is 1 operator available for flights from Colorado to Islip Long Island Airport as of August 2025.

How old do you have to be to fly from Colorado to Islip Long Island Airport?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Colorado to Islip Long Island Airport.

What documentation or ID do you need to fly to Islip Long Island Airport?

The necessary travel and health documents for your Islip Long Island Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

$119 Cheap Flights from Colorado to Islip in 2025

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Find the cheapest flights from Colorado to New York

Round-trip

One-way

Last minute

Cheap round-trip flights

11:15 am - 11:41 pmDEN-ISP

10h 26m1 stop

6:05 am - 1:13 pmISP-DEN

9h 08m1 stop

$238Frontier

Find Deal

Wed, Aug 20 - Tue, Aug 26

11:19 am - 10:55 amDEN-ISP

21h 36m1 stop

11:25 am - 10:14 amISP-DEN

24h 49m1 stop

$245Frontier

Find Deal

Wed, Sep 24 - Tue, Sep 30

9:02 am - 6:48 pmDEN-ISP

7h 46m1 stop

5:05 pm - 11:13 pmISP-DEN

8h 08m1 stop

$250Frontier

Find Deal

Sun, Aug 31 - Sat, Sep 6

11:59 pm - 9:04 amDEN-ISP

7h 05m1 stop

5:05 pm - 11:13 pmISP-DEN

8h 08m1 stop

$255Frontier

Find Deal

Thu, Sep 4 - Sat, Sep 6

11:59 pm - 9:04 amDEN-ISP

7h 05m1 stop

5:05 pm - 11:13 pmISP-DEN

8h 08m1 stop

$258Frontier

Find Deal

Sat, Sep 20 - Fri, Sep 26

11:59 pm - 9:04 amDEN-ISP

7h 05m1 stop

5:05 pm - 11:13 pmISP-DEN

8h 08m1 stop

$270Frontier

Find Deal

Thu, Sep 18 - Sat, Sep 27

6:45 am - 3:10 pmDEN-ISP

6h 25m1 stop

6:05 am - 3:25 pmISP-DEN

11h 20m2 stops

$282Southwest

Find Deal

Tue, Sep 9 - Tue, Sep 16

11:20 am - 10:05 pmDEN-ISP

8h 45m2 stops

6:05 am - 1:25 pmISP-DEN

9h 20m2 stops

$287Southwest

Find Deal

Tue, Sep 9 - Tue, Sep 16

6:45 am - 3:10 pmDEN-ISP

6h 25m1 stop

4:00 pm - 10:35 pmISP-DEN

8h 35m2 stops

$379Southwest

Find Deal

Wed, Sep 24 - Tue, Sep 30

4:19 pm - 6:59 pmDEN-ISP

24h 40m3 stops

7:39 pm - 4:43 pmISP-DEN

23h 04m3 stops

$999

Find Deal

Wed, Aug 20 - Sun, Aug 24

Frontier flights from Colorado to Islip, New York

Our best Frontier deals on Colorado to Islip, New York flight tickets

Frontier

Aug 20

DEN11:15 amDenver Intl

10h 26m

1 stop

ISP11:41 pmIslip Long Island

Aug 26

ISP6:05 amIslip Long Island

9h 08m

1 stop

DEN1:13 pmDenver Intl

$238

Find similar

Frontier

Sep 24

DEN11:19 amDenver Intl

21h 36m

1 stop

ISP10:55 amIslip Long Island

Sep 30

ISP11:25 amIslip Long Island

24h 49m

1 stop

DEN10:14 amDenver Intl

$245

Find similar

Frontier

Aug 31

DEN9:02 amDenver Intl

7h 46m

1 stop

ISP6:48 pmIslip Long Island

Sep 6

ISP5:05 pmIslip Long Island

8h 08m

1 stop

DEN11:13 pmDenver Intl

$250

Find similar

Southwest flights from Colorado to Islip, New York

Our best Southwest deals on Colorado to Islip, New York flight tickets

Southwest

Sep 9

DEN6:45 amDenver Intl

6h 25m

1 stop

ISP3:10 pmIslip Long Island

Sep 16

ISP6:05 amIslip Long Island

11h 20m

2 stops

DEN3:25 pmDenver Intl

$282

Find similar

Southwest

Sep 9

DEN11:20 amDenver Intl

8h 45m

2 stops

ISP10:05 pmIslip Long Island

Sep 16

ISP6:05 amIslip Long Island

9h 20m

2 stops

DEN1:25 pmDenver Intl

$287

Find similar

Southwest

Sep 24

DEN6:45 amDenver Intl

6h 25m

1 stop

ISP3:10 pmIslip Long Island

Sep 30

ISP4:00 pmIslip Long Island

8h 35m

2 stops

DEN10:35 pmDenver Intl

$379

Find similar

Fly from

Fly to

Route

Depart

Return

Price

DenverIslip

DEN - ISP

DENISP

Denver Intl

Wed 8/20

11:15 am-11:41 pm

1 stop10h 26m

Islip Long Island

Tue 8/26

6:05 am-1:13 pm

1 stop9h 08m

$238

DenverIslip

DEN - ISP

DENISP

Denver Intl

Wed 9/24

11:19 am-10:55 am

1 stop21h 36m

Islip Long Island

Tue 9/30

11:25 am-10:14 am

1 stop24h 49m

$245

DenverIslip

DEN - ISP

DENISP

Denver Intl

Sun 8/31

9:02 am-6:48 pm

1 stop7h 46m

Islip Long Island

Sat 9/6

5:05 pm-11:13 pm

1 stop8h 08m

$250

DenverIslip

DEN - ISP

DENISP

Denver Intl

Thu 9/4

11:59 pm-9:04 am

1 stop7h 05m

Islip Long Island

Sat 9/6

5:05 pm-11:13 pm

1 stop8h 08m

$255

DenverIslip

DEN - ISP

DENISP

Denver Intl

Sat 9/20

11:59 pm-9:04 am

1 stop7h 05m

Islip Long Island

Fri 9/26

5:05 pm-11:13 pm

1 stop8h 08m

$258

DenverIslip

DEN - ISP

DENISP

Denver Intl

Thu 9/18

11:59 pm-9:04 am

1 stop7h 05m

Islip Long Island

Sat 9/27

5:05 pm-11:13 pm

1 stop8h 08m

$270

DenverIslip

DEN - ISP

DENISP

Denver Intl

Tue 9/9

6:45 am-3:10 pm

1 stop6h 25m

Islip Long Island

Tue 9/16

6:05 am-3:25 pm

2 stops11h 20m

$282

DenverIslip

DEN - ISP

DENISP

Denver Intl

Tue 9/9

11:20 am-10:05 pm

2 stops8h 45m

Islip Long Island

Tue 9/16

6:05 am-1:25 pm

2 stops9h 20m

$287

DenverIslip

DEN - ISP

DENISP

Denver Intl

Wed 9/24

6:45 am-3:10 pm

1 stop6h 25m

Islip Long Island

Tue 9/30

4:00 pm-10:35 pm

2 stops8h 35m

$379

DenverIslip

DEN - ISP

DENISP

Denver Intl

Wed 8/20

4:19 pm-6:59 pm

3 stops24h 40m

Islip Long Island

Sun 8/24

7:39 pm-4:43 pm

3 stops23h 04m

$999

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Colorado to Islip, New York

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Other information

What is the cheapest day to depart on your flight to Islip, New York?

The cheapest day to depart from Colorado to Islip, New York is on a Thursday. Travelers who choose to depart for Islip, New York on a Thursday will often find tickets for as low as $286. The most expensive day to fly to Islip, New York is Wednesday, with ticket prices averaging around $426.

What is the cheapest time of day to depart on your flight to Islip, New York?

Flying to Islip, New York from Colorado in the evening is the least expensive time of day to depart. momondo users have found prices as low as $266 when looking at flights departing in the evening. Flights to Islip, New York are more costly in the morning, with an average ticket price of $363. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

Cheap Colorado to Islip, New York flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Colorado to Islip, New York

Best Price Found	$119
Fastest flight time	6h 25m
Direct flights	None
Airports in Islip, New York	1 airport

The best one-way flight to Islip, New York from Colorado in the past 72 hours is $119. The best round-trip flight deal from Colorado to Islip, New York found on momondo in the last 72 hours is $238.

The fastest flight from Colorado to Islip, New York takes 6h 25m

There are no direct flights from Colorado to Islip, New York. Popular non-direct route for this connection is Denver Intl Airport - Islip Long Island Airport.

There is 1 airport near Islip, New York: Islip Long Island (ISP)

Search flight deals

When did momondo last update prices for flights from Colorado to Islip Long Island Airport?
Prices for flights from Colorado to Islip Long Island Airport are updated daily.
How many operators does momondo search for flights from Colorado to Islip Long Island Airport?
There is 1 operator available for flights from Colorado to Islip Long Island Airport as of August 2025.
How old do you have to be to fly from Colorado to Islip Long Island Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Colorado to Islip Long Island Airport.
What documentation or ID do you need to fly to Islip Long Island Airport?
The necessary travel and health documents for your Islip Long Island Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Colorado to Islip, New York

Compare and see reviews for airlines that fly from Colorado to Islip, New York with momondo

Airline	Rating	Free Cancellation	Price
Southwest	PriceFrom $375	Free Cancellation	Rating 8.0 4,244 reviews		Search Southwest flights

Montauk

Riverhead

Sag Harbor

Southampton

Amagansett

Why use momondo?

Why should I use momondo to find a flight deal from Colorado to Islip?

It is quick and easy to find Colorado to Islip flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Islip that suits you.

Can I find flights from Colorado to Islip with flexible booking policies on momondo?

momondo does allow users to show only those flights to Islip from Colorado which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Colorado to Islip?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Islip from Colorado.

I’m not ready to book a flight from Colorado to Islip right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Colorado to Islip now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Islip and let you know when they change.